Datasheet > CO-491

CO-491

更新时间： 2022-02-26 14:40:08

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491 Series SMD Crystal Oscillators

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CO-491 数据手册

Oscilent Corporation | 491 Series SMD Crystal Oscillators

Page 1 of 2

SMD Oscillators

Series Number

Package

Description

Last Modified

491

4 Pad PCB

PECL Output

Jan. 01 2002

FEATURES

- Wave form symmetry of 40/60%

- PECL output

- Industry standard 4 Pad PCB SMD Package

- RoHs / Lead Free compliant

OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS

PARAMETERS

Output Logic

Input Voltage (VDD)

CONDITIONS

CHARACTERISTICS

Positive ECL Square Wave (PECL)

3.3 ±10% 5.0 ±10%

UNITS

VDC

19.440 ~ 180.0 (Fund, Third, Fifth / UM-1)

0 ~ +70 (Std.) / -40 ~ 85 (Option)

-55 ~ +125

MHz

°C

Frequency Range (f )

Operating Temperature (T

Storage Temperature (T

)

OPR

)

°C

STG

±20 (0 ~ +70°C Only), ±25, ±50, ±100 max.

Inclusive of Overall Stability

PPM

Overall Frequency Stability

(a) Frequency Tolerance

(b) Temperature Stability

(d) Load Stability

Inclusive of Overall Stability (Operating Temperature)

Inclusive of Overall Stability (VDD ±5%)

Inclusive of Overall Stability (RL ±5%)

80 max.

120 max.

PPM/Y

Input Current (I

Aging

)

@ 25°C

±1 max.

2 max.

20% to 80% of Waveform

Rise Time (T )

20% to 80% of Waveform

2 max.

Fall Time (T )

PECL

VDD - 1.025 min.

VDD - 1.620 max.

VDC

Ohms

Output Voltage High "1" VOH

Output Voltage Low "0" VOL

Load

PECL

50% of Waveform

50 ±10 (Std.) / 50 ±5 (Option)

Duty Cycle

10 max.

Start-Up Time (T )

RMS

3.5 max.

Jitter

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